Quality of Water in the Vaal Barrage Reservoir Date Sampled 6 June 2018 Riviera Vosloo Hotel Klip 3 Park River Dickinson Suikerbosrant Park 1 Riviera Aquatic FW De Klerk 2 Club Bridge SEBOKENG VEREENIGING Rietspruit N Railway Bridge 4 Vaal River Village R59 Bridge Manor VANDERBIJLPARK Emfuleni Eligwa Ascot Bridge Lochvaal 9 Riverside Sun Park Club Club Hotel 5 Lethabo Weir Upstream 6 8 Vaalview Vaal River 10 Aquatic Club Baddrift Bridge to Vaal River Vaal Clavadel Dam 7 Abrahamsrust Caravan Park Resort Luciana Parys Country Club Taaiboschspruit to Leeuspruit Toll Free No: 0860 10 10 60 Downstream Not to Scale SASOLBURG Sample Point Interpretation of the results obtained from water samples collected at the respective sample points (refer map above). Escherichia coli E.coli counts per 100ml at sample points (E.coli) Predicted symptoms 1 2 3 4 5 6 7 8 9 10 include: 135 57 860 7,230 960 173 9 1,414 14,600 6 This Skin irritations, infections Week 173 7 3,310 11,000 5,810 63 19 91 > 241,960 19 & intestinal disorders* Last Week Significant risk of Low risk of Slight risk of High risk of gastrointestinal gastrointestinal disorders gastrointestinal disorders gastrointestinal disorders Guideline disorders E.coli < 130 E.coli 130 - 200 E.coli > 400 E.coli 200 - 400 counts/100ml counts/100ml counts/100ml counts/100ml Blue Green Algae Blue Green algae counts at sample points Predicted symptoms 1 2 3 4 5 6 7 8 9 10 include: This 80 2,172 < 40 < 40 < 40 < 40 1,001 1,207 483 6,929 Skin irritations, infections Week & intestinal disorders* Last < 40 603 416 1,207 2,655 241 121 121 1,207 121 Week Low Risk Moderate Risk High Risk Guideline Blue Green algae Blue Green algae Blue Green algae < 20,000 cells/ml 20,000 – 100,000 cells/ml > 100,000 cells/ml Algal pigments expressed as Chlorophyll-a levels at sample points Algal Pigments Predicted nuisance 1 2 3 4 5 6 7 8 9 10 conditions include: This < 2 19 6 17 11 14 5 70 7 16 Scums & smells Week Last 4 20 2 7 30 37 27 123 18 55 Week Low Risk Moderate Risk High Risk Guideline Chlorophyll-a < 15ug/l Chlorophyll-a 15 - 30ug/l Chlorophyll-a > 30ug/l * If ingested. X Sample not received / no data available. Reports generated every Friday of the year. DISCLAIMER: Although Rand Water has made every endeavour to make an accurate assessment of the parameters described above (based on published South African and international criteria), neither Rand Water, nor any of its officials, shall be responsible for any damage or health related problems that may result due to the use of the Vaal Barrage Reservoir for any purpose..